The Amp Garage

Sounds pretty good. Sounds more like 39 than 36. The speakers make a huge difference to the tone as well.

Even though I REALLY don't dig that circuit for anything other than Slash (and I am kinda played out with that), I have done a ton of clip-listening. Are you using Greenbacks or G12-80s?

Thanks for the clarification... kudos. I will change my layout.

Instead of taking the bias off the pot wiper you would use the pot to make a voltage divider with a variable ground leg. In the SSS 002, I like a 75k off the -170V, then a 24k3, then a 10k pot wired as a variable resistor to ground. Bias comes from the junction of the 75k and the 24k3. If the wiper...

martin manning wrote: ↑Mon Feb 26, 2024 1:11 pm Your bias adjust is not fail-safe, but that would be easy to fix by following the SSS 002 schematic implementation.

Can you explain what should be done?

Just thought I'd post this here... the way I have been setting this up. Of course this is just a section of an example.

No preamp board space taken by the components, easy enough to add to just about any layout.

Feel free to critique. Hope it helps.

Nice sounds... I like the tweed head. Do you have any gunshots of this one?

Very nice looking build!

Sounds great Fred! Awesome job

Has anyone tried the MOD brand of caps?

I have been using them in everything for a while now. It seems that they are better (less shrill) than F&Ts.

Just wondering how they compare to what you've tested. I'm curious about how they stack up for the price.

You will not need the doubler circuit, or you need a different TX.

Do you have a schematic of what it is that you are replacing? Hard to tell without more clues.

If it is the standard Dumble relay supply, then yes - with modification to the circuit.

I've included a cropped image of #124 to show the connection. 6.3 v TX doubled with a 12 v regulator.

I hope you get well soon, buddy.

I have built a few amps that are gigged and played quite regularly over the past 4-5 years. All of which were built or converted to Martin's bipolar supply. None of them have had any tube failures or any other failures. Loud, punchy and clear as a bell, they all get along lot of attention out in pub...

... looks around for any evidence of something that once existed. This was not possible, since if anything was left at all, it was just a vapor. A vapor that was only noticable if looked for.

Haha. I guess I missed it.

You can get the same result without electrolysis by using sodium persulfate or ferrochloric acid. Put it in a container and wait... Maybe a little bit of stirring/agitation.

Raja_Kentut, not to take anything away from your results. It looks fantastic!